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|
#! /usr/bin/env perl
# roff2* - transform roff files into other formats
# Source file position: <groff-source>/contrib/groffer/perl/roff2.pl
# Installed position: <prefix>/bin/roff2*
# Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
# Written by Bernd Warken.
# Last update: 5 Jan 2009
# This file is part of `groffer', which is part of `groff'.
# `groff' is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# `groff' is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
########################################################################
require v5.6;
use strict;
use warnings;
use File::Spec;
# temporary dir and files
use File::Temp qw/ tempfile /;
my $Dev_Null = File::Spec->devnull();
my $Mode;
my $Name;
{
my ($v, $d);
($v, $d, $Name) = File::Spec->splitpath($0);
die "wrong program name: $Name;"
if $Name !~ /^roff2[a-z]/;
}
$Mode = $Name;
$Mode =~ s/^roff2//;
my $Groff_Version = `groff --version 2>$Dev_Null`;
die "$Name error: groff does not work;" if $?;
my $Groffer_Version = `groffer --version 2>$Dev_Null`;
my $Has_Groffer = ! $?;
if ($Has_Groffer) {
foreach (@ARGV) {
last if $_ eq '--';
next if $_ eq '-';
if ($_ eq '-v' || '--version' =~ m|^$_|) {
print $Name, ' in ', $Groffer_Version;
exit 0;
}
if ($_ eq '-h' || '--help' =~ m|^$_|) {
&usage_with_groffer();
exit 0;
}
}
system('groffer', '--to-stdout', "--$Mode", @ARGV);
exit $?;
} else {
my @filespec;
my $double_minus;
foreach (@ARGV) {
if ($double_minus) {
push @filespec, $_;
next;
}
if ($_ eq '--') {
$double_minus = 1;
next;
}
if ($_ eq '-') {
push @filespec, '-';
next;
}
if ($_ eq '-v' || '--version' =~ m|^$_|) {
print $Name, ' in ', $Groff_Version;
exit 0;
}
if ($_ eq '-h' || '--help' =~ m|^$_|) {
&usage_without_groffer();
exit 0;
}
if ($_ =~ /^-/) {
&error_no_groffer();
&error_no_options();
next;
}
if (-f && -r) {
push @filespec, $_;
} else {
&error_no_groffer();
print STDERR "$_ is not an existing, readable file.\n";
}
}
@filespec = ('-') unless @filespec;
my $has_stdin;
foreach (@filespec) {
if ($_ eq '-') {
$has_stdin =1;
last;
}
}
if ($has_stdin) {
my $tempdir;
foreach ($ENV{'GROFF_TMPDIR'}, $ENV{'TMPDIR'}, $ENV{'TMP'},
$ENV{'TEMP'}, $ENV{'TEMPDIR'},
File::Spec->catfile($ENV{'HOME'}, 'tmp')) {
if ($_ && -d $_ && -w $_) {
$tempdir = $_;
last;
}
}
my $template = $Name . '_XXXX';
my ($fh, $stdin);
if ($tempdir) {
($fh, $stdin) = tempfile($template, UNLINK => 1, DIR => $tempdir) ||
die "$Name: could not create temporary file;";
} else {
($fh, $stdin) = tempfile($template, UNLINK => 1) ||
die "$Name: could not create temporary file;";
}
open $fh, ">$stdin";
print $fh $_ foreach <STDIN>;
foreach (@filespec) {
$_ = $stdin if $_ eq '-';
}
} # if $has_stdin
my $grog;
my $groff_options = "-T$Mode";
$groff_options = '-TX75-12 -Z' if $Mode eq 'x';
$groff_options = '-Tlatin1' if $Mode eq 'text';
if ($Mode eq 'pdf') {
my $ps2pdf;
my @path = File::Spec->path();
foreach (@path) {
my $file = File::Spec->catfile($_, 'ps2pdf');
if (-f $file && -x $file) {
$ps2pdf = "$file -";
last;
}
}
unless ($ps2pdf) {
foreach (@path) {
my $file = File::Spec->catfile($_, 'gs');
if (-f $file && -x $file) {
$ps2pdf = $file . ' -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite ' .
'-sOutputFile=- -c save pop -f -';
last;
}
}
}
$grog = `grog -Tps @filespec`;
chomp $grog;
system("$grog | $ps2pdf");
exit $?;
} else {
$grog = `grog $groff_options @filespec`;
chomp $grog;
system($grog);
exit $?;
}
}
my $error_no_groffer;
sub error_no_groffer {
return 1 if $error_no_groffer;
$error_no_groffer = 1;
print STDERR "$Name: groffer is not available.\n";
}
my $error_no_options;
sub error_no_options {
return 1 if $error_no_options;
$error_no_groffer = 1;
print STDERR "$Name: groffer options are not allowed.\n";
}
sub usage_with_groffer {
print <<EOF;
usage: $Name [option]... [--] [filespec]...
-h | --help print usage information
-v | --version print version information
All other options are arbitrary options of `groffer'; the options
override the behavior of this program.
`filespec's are the same as in `groffer': either the names of
existing, readable files or `-' for standard input or a search pattern
for man pages. No `filespec' assumes standard input automatically.
EOF
}
sub usage_without_groffer {
print <<EOF;
usage: $Name [option]... [--] [filespec]...
-h | --help print usage information
-v | --version print version information
No other options are allowed because `groffer' is not available.
The only `filespec's allowed are the names of existing, readable files
or `-' for standard input. No `filespec' assumes standard input
automatically.
EOF
}
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